Tube: Hydrogen Sulfide 100/a (CH29101) – Colorimetric Gas Detector Tube

Overview

The Dräger Tube: Hydrogen Sulfide 100/a (CH29101) provides fast, dependable H₂S measurements with a simple color change reaction—no power, warm-up or calibration gas needed. Used with the Dräger Accuro hand pump (100 mL per stroke), the tube’s granular reagent changes from pale to dark across a printed scale, allowing technicians to read ppm H₂S directly at the job site. Typical applications include confined space screening, leak localization, process vent and scrubber checks, odor complaint investigations, and WWTP headworks monitoring. Each lot is factory-calibrated; a lot-specific instruction sheet defines measurement range, required strokes, correction factors, and interferences. The 100/a series is commonly used for low-to-mid ppm H₂S checks (e.g., single or multiple strokes to cover a broad range). Always verify the exact range/strokes on your tube’s insert.

Key Features & Specifications

• Fast colorimetric reading of H₂S (ppm) on-site; no electronics or batteries

• Accuro 100 mL bellows pump compatibility; defined number of strokes per range (see lot insert)

• Clear printed ppm scale for direct reading; optional corrections for temperature/humidity

• Field-friendly: robust glass tube with granular reagent; single-use for traceable results

• Typical uses: O&G facilities, refineries, wastewater, pulp & paper, biogas, labs, and IAQ spot checks

How It Works

A measured air sample is drawn through the tube using the Accuro pump. Hydrogen sulfide reacts with the tube’s reagent producing a distinct color stain proportional to concentration. The length/intensity of the stain is compared with the printed ppm scale to obtain the reading. For extended ranges or higher concentrations, follow the multiple-stroke or short-sample instructions in the lot insert.

Applications

• Confined spaces & safety screening (pre-entry checks alongside electronic monitors)

• Leak detection on sour gas lines, vents, flares, storage tanks and scrubber outlets

• Process troubleshooting in refineries, sulfur recovery, biogas and wastewater plants

• Odor investigations and compliance spot checks where H₂S is suspected

Operating Steps (Quick Guide)

1. Score and tip both tube ends; insert the tube with arrow toward pump.

2. Zero/inspect the Accuro 100 mL pump (leak check).

3. Draw the required number of strokes for your range (see insert).

4. Wait the indicated development time; read the stain against the ppm scale.

5. Note temperature/humidity; apply correction factors if specified. Record location, time and lot number.

Best Practices & QA

• Use fresh tubes from the same lot for comparability; store per manufacturer limits.

• For high humidity or potential interferences (e.g., SO₂), apply stated corrections or use pre-filters if provided.

• Avoid sample line contamination; purge lines before sampling.

• Treat tubes as single-use evidence for audits and incident documentation.

Compatibility & Ordering Notes

• Tube code: Hydrogen Sulfide 100/a (CH29101) — H₂S, low–mid ppm ranges (confirm exact range/strokes on your lot insert).

• Requires: Dräger Accuro 100 mL hand pump (and optional prefilters as specified).

• Pack size, shelf life, operating temperature/humidity: per lot datasheet.

• Cross-sensitivities (e.g., SO₂, mercaptans) and corrections: see insert for details.

Why Seven Star LLC

We supply genuine Dräger detector tubes and Accuro pumps, help you choose the correct H₂S range, and provide a one-page SOP (strokes, timing, corrections) tailored to your site conditions—so your team gets consistent, defensible results.

FAQ

Q: What’s the measurement range for the 100/a tube?

A: It’s a low–mid ppm H₂S tube. The exact range and strokes are defined on your lot’s instruction sheet—always verify before use.

Q: Can I use it for high H₂S concentrations?

A: Use the specified reduced strokes or select a higher-range H₂S tube per the Dräger catalog.

Q: Do I need calibration?

A: No external calibration is required; tubes are factory-calibrated. Follow the lot insert and apply any listed corrections.

Call to Action

Request a quote—Tell us your expected H₂S range, ambient conditions, and consumption rate. We’ll ship Dräger H₂S 100/a tubes (CH29101) with an Accuro pump and a site-specific quick SOP for fast deployment.